the room, a letter was seen lying on the desk.A. Entering B. EnteredC. After entering D. W

发布时间：2020-08-16 19:40:58

    the room, a letter was seen lying on the desk.
A. Entering
B. Entered
C. After entering
D. When he entered

网友回答

A. Entering
B. Entered
C. After entering
(答案→)D. When he entered
解析：考查非谓语动词。题中a letter与前面的分句不是同一个主语，所以前面应加上适当的主语，故选D。
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